Nb Very Common

a soft grey ductile metallic element used in alloys; occurs in niobite; formerly called columbium

a Latin phrase (or its abbreviation) used to indicate that special attention should be paid to something

"the margins of his book were generously supplied with pencilled NBs"

Initialism of NASA research bomber plane. (prefix code in designations)

Initialism of no ball.

Abbreviation of nanobel.

Initialism of northbound.

Alternative form of NB: initialism of non-binary.

Abbreviation of northbound.

Initialism of nota bene; used in written English to introduce something to be noted.

Initialism of nota bene.

Initialism of New Brunswick, a Canadian province.